No one need stress the difficulty of writing a good textbook, but these problems are greatly magnified when the subject is one that may be in a state of tremendous flux. Hematology almost defies an author to be able to collect his source material before newer and dramatically different ideas have been formulated. The subject at hand is no exception. Despite these handicaps, the author has done a magnificent job of writing a reference volume in the field of leukemia.

He states in his preface that his "intention in writing this book has been to provide a guide through the maze of published work to separate the tangled lines of progress in research, and to give, in small compass, a reasonably comprehensive survey of current beliefs and activities in both the laboratory and clinical aspects of leukemia." As such, he has offered both the student and the practicing physician an